Colomac Mineとは 意味・読み方・使い方

The Colomac Mine was an open pit gold mine in the Northwest Territories that operated between 1990–1992, and 1994-1997. It was operated by Peggy Witte, whose first company Neptune Resources Limited had little success in making a profitable operation. In 1994 the mine reopened by her other company, Royal Oak Mines Incorporated. Low gold prices forced Royal Oak into bankruptcy and the mine was reverted to the ownership of the federal government of Canada. A major cleanup effort is underway to prevent the mine from polluting the environment. The mine tailings have a very high cyanide and ammonia content, and a serious acid mine drainage problem as well as other contaminants and waste on site.